Insulator for armature-conductors.



A. R. Loom. AINSULATOB FOR ABMATUBE CONDUGTOBS. APPLICATION YILED DBU. 20, 1907.

Patented 861313.22, 1908.

` `UNITED STATES PATENT OFFICE.

i i i ALLEaTn.roeien-oi C11-lease, ILLINOIS.` 1

msULA'ro'n For. AnMATURncoNDUcToRs.

I No. 899,059. Specification-of Letters Patent.

Patented Sept. 22, 1908.

Application filed DecembervZD, 1907. Serial No. 407,382. l

T o all whom it may concern.'

theirends and the copper clip 17 is Vapplied to l Be it known that I, ALLERT R. LOCKE, a the end of each bar. The, lower part of the citizen of the United States, residing at-Uhiclip 1T is riveted to the bar as at 1S. The

cago, in the coiuity of Cool: and Sta-te of llliupper end of the clip is perforated as at 18 so j. nois, have invented certain new and useful that the clip may be conveniently riveted to Y Improvements in Insulators for Armaturcanother setof armature conductoisl or bars 60 Conductors, of which the following is a specirespectively, such as `11', l2', 13', and

z; iication. 14'. The last series of conductors each comi My invention relates to improvements in pleting an armature coil of a single turn.

10 insulators for armature conductors. ll'hen the conductor 10 and coperating j One of the objects of my invention is to conductor 10 have been laid in position and 65 provide a closed insulating hood adapted to riveted together they are then soldered or l partially surround portions of armature consweatso as to intimately ein all confronting ductors that'are joined by soldering, whereby contacting surfaces by means of the flowing 15 the melted solder, due to the abnormal heat liquid met-al. rl`he remaining terminals of of the conductor, maybe caught and retained the coil, 10-10, are similarly joined to re- 70 in intimate contact with the joined conducs )ective connnutator bars. In like manner tors until it cools. all of the armature conductors are thus My insulator is especially adapted to be joined or connected. Each joint made as .j used for insulating the armature conducabove described, is then cove-red by means of tors at point-s where they are riveted and solmy improved insulating hood. 75

l dered together, es ecially in that type of ar- 2O indicates in v insulating hood, molded matures where eac i conductor turn is divided of insulating material or formed up of micay into two sections, and the ends thereot` are nite7 completely closed at its rear and top electrically joined by riveting and soldering sides. In Figs. 1 and 2 two of the insulating i at the points of juncture at the rear end of the hoods are shown in position, and in F ig. 3 S0 armature. one of such hoods is shown in cross section.

T he insulator may also be used at the In Fig. 3 it is clearly shown that the upper points where the terminals of the armature right hand closed corner of the hood is '30 coils are joined to the respective commutator slightly elevated. gradually increasingr in i sections or bars. height from the left-hand side at. a slight 85 l In the drawings; Figure 1 is a plan view of angle. The hood 20 entirely incloses the l a broken away fragment of a group of arjoint over which it is placed.

l mature conductors, showing the points where It frequently happens, on occasions when they are joined at the rear end of the armaan armature is over-loaded, the conductors i ture of a dynamo electric machine. Fig. 2 10, etc., become so overheated as to melt 9o is a side elevation of saine representing a the solder between the parts of the joint, and

l fragment of a longitudinal section of the a1'- the centrifugal action of the armature causes mature from thccore to the periphery at the the solder to either ily out of the joint or to' 40 rear end of the armature. tig. 3 shows the leave the same and bridge the insulation beterminal of a singlearmature turn with the. tween adjoining conductors7 thus -short 95 sulating hood in section. Fig. 1 is a percirc-uitingl said conductors and increasing spec-tive view oi the insulating hood. the heat of the armature and frequently In all of the views the same reference charmelting the conductors of the short-eircuited acters indicate like parts. coil.

..In the illustration the armature conduc- M v insulating hood prevents the solder 100 "torsel, 11, 12, 13 and 14 are llat bars7 each from leaving the joint, being closed in radial separately insulated by the application of direction7 or the path the solder would take proper insulating material, such as mica-nite., if it. was not restrained and held by the 5U shown at 16% completely surrounding each closed hood. Any solder striking the top bar. Fig. l shows a group of iive such bars, surface ofthe hood would by means of the which are placed with their narrow edges top angular surface be deposited in the rear nearest approaching the armature core. top part of the hood and there held. This Each of said bars are slightly deflected at etl'ect prevents the dissipation of the solder 2 A v e 899,059

and its yapplication to other conducting parts of the larmature, greatly to the damage of such parts.

It will be seen, by reference'to Fig. 2, that the insulating 'hoods 20 are firmly held in place by bands of insulating material, such as 21 and'2-2, and that retaining bands of wire, 23, which pass entirely around the armature serve to bind theml firmly on the clips 17 and thus scoured the joints are thereby well, firmly and permanently insulated.

My `invention is especially Valuable -in armatures of a class wherein the ends of the conductors are covered by a jacket, such as inclosed railway motors and in which the conductors are frequently subjected to heavy over-load and other rou l1 usage.

Having thus describe my invention, what I- claim and desire to secure by Letters Patent, 1s; A

1. An insulating wint-covering, comprising a separable hood of insulating material,

ALLERT R. LOCKE.

In the presence of- FORE BAIN, MARY F. ALLEN. 

